feat: 更新图标和样式，添加底部弹层滑动效果

src/style.css

@@ -36,5 +36,15 @@
     -webkit-background-clip: text;
     color: transparent;
   }
-}
 
+  /* 底部弹层上滑 / 下滑动效，与设计稿 ui_mock.html 保持一致 */
+  .slide-up-enter-active,
+  .slide-up-leave-active {
+    transition: transform 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
+  }
+
+  .slide-up-enter-from,
+  .slide-up-leave-to {
+    transform: translateY(100%);
+  }
+}